9:16 Aspect Ratio Calculator
Use this 9:16 aspect ratio calculator for vertical video and phone-first images. The 9:16 shape fills a smartphone screen in portrait orientation, making it the standard for TikTok, Instagram Reels, Instagram Stories, YouTube Shorts and Snapchat-style content. Enter one dimension and calculate the other before you crop, export or design overlays.
9:16 calculator
Common 9:16 resolutions
| Size / ratio | Label | Use-case |
|---|---|---|
| 720×1280 | HD vertical | Smaller mobile exports |
| 1080×1920 | Full HD vertical | TikTok, Reels, Stories, Shorts |
| 1440×2560 | QHD vertical | Higher-quality mobile video |
| 2160×3840 | 4K vertical | Professional vertical exports |
| 608×1080 | Light vertical crop | Lower bandwidth previews |
9:16 formula
height = width × 16 ÷ 9width = height × 9 ÷ 16Example: 1080px wide → 1080 × 16 ÷ 9 = 1920px high.
Best uses for vertical 9:16
9:16 is the portrait counterpart to 16:9. Instead of being wide, the frame is tall: 9 units wide for every 16 units high. That makes it ideal for feeds where people hold the phone upright and expect the video to fill the screen.
If you start with a horizontal 16:9 clip, converting it to 9:16 usually means cropping the sides, reframing around the subject, or placing the original footage over a blurred vertical background. If you know the final placement is TikTok, Reels or Shorts, shooting and editing in 9:16 from the start is cleaner.
A 9:16 canvas is not just a rotated widescreen video; it changes how the subject is framed. Faces, product shots and text overlays need to stay near the centre, because platform UI often covers the edges. The calculator gives you the correct pixel dimensions — you still design within the safe visual area.
The numbers stay predictable at any size. A 720px-wide export needs a height of 1280px, a 1080px width needs 1920px, and a 1440px width needs 2560px — matching HD, Full HD and QHD vertical exports. If your project is horizontal video instead, switch to the 16:9 aspect ratio calculator. Short-form creators can also use the Instagram aspect ratio calculator and the social media image sizes guide for per-platform dimensions.
Frequently asked questions
Related calculators and guides
- Aspect ratio calculator — the main calculator with custom ratios
- 16:9 aspect ratio calculator — the widescreen counterpart
- Instagram aspect ratio calculator — posts, Reels and Stories placements
- Social media image sizes — recommended dimensions per platform